ML20084F136
| ML20084F136 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 12/06/1971 |
| From: | Plait C ROCHESTER GAS & ELECTRIC CORP. |
| To: | James O'Reilly US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084F124 | List: |
| References | |
| NUDOCS 8304200121 | |
| Download: ML20084F136 (1) | |
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i lw 1042A EST DEC 6 71 PB052 SYB126 SY RHA052 AM FDF 4 EXTRA ROCHESTER NY 6 1010 A EST JAES P 0 REILLY, DIRECTOR REGENT 1 DIVN OF COMPLIANCE U S A E C 970 BROAD ST NEWARK NJER THIS TO CONFIRM MY CONVERSATION AT 0520 THIS DATE WITH YOUR I
le T YOUNG IN REGARD TO ABNORMAL OCCURANCE AT GINNA STATION 1 HIE PERFORMING MONTHLY SURVEILLANCE TEST PT21, SAFETY INJECTION SYSTEM, ON 12/5/71 AT 1100 THE C SAFETY INJECTION PUMP MOTOR TRIPPED OUT WHEN IT VAS ALMOST UP TO SPEED. IT HAD BEEN MANUALLY STARTER FROM 480 VOLT BUS 16. INVESTIGATION FOUND THAT THE SERIES OVERCURRENT TRIPPING DEVICE WITH LONG TIME AND INSTANTANEOUS ELEMENTS ON PHASE B ON THE C SAFETY INJECTION PUMP BRE AKER WHICH WAS FED FROM BUS 16 VAS TRIPPING PREMATURELY ON STARTING CURRENT DOE TO THE DEVICE NOT RESETTING PROPERLY. FAULTY ELEMENTS VAS REMOVED FROM THE B PHASE OF THE C SAFETY INJECTION PUMP BREAKER AND THE SURVEILLANCE TEST VAS COMPETED SUCCESSFULLY.
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O PLANT OPERATING REVIEW COMMITTEE MET AND APPROVED OPERATION OF THE C SAFETY INJECTION PUMP WITH THE FAULTY ELEMENT REMOVED FROM ThE B PHASE BECAUSE THERE IS STILL PROTECTION ON THE OTHER
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TWO PHASES OF THIS BREAKER. A PROPERLY OPERATING ELEMENT WILL BE INSTALLED ON THE BRE AMER AS SOON AS POSSIBE
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CHARLES E PLATT SUPERINTENDENT OF GINNA STAYION ROCHESTER GAS AND ELECTRIC C0 0520 PT21 12/5/71 1100 0 480 16 B C M B C C B
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